Why most player prop bettors lose money (and how to fix it)
Most people betting NBA player props are doing it wrong. They're tailing someone's "lock of the day" with zero understanding of why it's supposedly a good bet.
Here's the problem: if you don't know the math behind a pick, you have no idea if you're getting value. A -110 line on Jayson Tatum over 26.5 points might look good — but if his true probability of hitting is only 48%, you're literally lighting money on fire.
The fix is simple: calculate expected value (EV) before every bet.
Here's the quick version:
Estimate the true probability — use season averages, matchup data, pace, minutes projections
Convert the book's line to implied probability — a -110 line implies ~52.4%
Compare — if your number is higher than the book's implied prob, you have +EV. If it's lower, pass.
Size with Kelly — don't just throw $50 on everything. Kelly criterion tells you exactly how much to bet based on your edge.
This is what I do every single day at Overline. Every pick comes with the full breakdown — projected probability, book implied probability, edge percentage, and Kelly stake. No vibes. No "trust me bro." Just math.
If that sounds like how you want to bet, come check it out.
